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Z92.26

Z92.26Personal history of immune checkpoint inhibitor therapy

Billable / specific codeICD-10-CMPOA exempt

Z92.26 is a billable, specific ICD-10-CM code for personal history of immune checkpoint inhibitor therapy. It is valid for submission on a claim.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Personal history of ICI drug therapy

Risk adjustment

Z92.26 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

Z92.26 is named in 3 Medicare coverage policies 3 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A56907Billing and Coding: Bisphosphonate Drug Therapy
  • A56948Billing and Coding: Lab: Cystatin C Measurement
  • A57189Billing and Coding: Serum Magnesium

How Z92.26 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to Z92.26.

  • HistorypersonalICI drug therapy(immune checkpoint inhibitor)
  • Historypersonalimmune checkpoint inhibitor therapy(ICI)
  • Historypersonaldrug therapyICI drug therapy(immune checkpoint inhibitor)

Related codes at this level

Codes that share Z92.2. If Z92.26 is not quite right, the correct code is usually one of these.

Questions about Z92.26

Is Z92.26 a billable ICD-10-CM code?
Yes. Z92.26 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Z92.26 sit in the tabular list?
Factors influencing health status and contact with health services (Z00-Z99), in the block Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.